What exactly is Madeline Albright's legacy or Condi Rice's (other than ignoring the warning of OBL intending to strike in the US). For that matter, what was the legacy Hillary Clinton, who has been repeated praised as SoS? I know she can become President, but I assume that no one would then spend their time writing of the need for her to have a legacy.
It is not that Kerry has ever been an under achiever.
- He was a highly decorated war hero - which for some is alone a legacy
- He will forever be remembered for his eloquent fight to end the Vietnam War - certainly a legacy
- His time in the DA's office included things many lawyers would love as their life time legacy
- Even in his time as a private lawyer, he had a case where he proved that a man on death row had not committed a murder
- As LT Governor, he was influential in getting a regional Cap and Trade for Acid Rain.
- Then there were all the things he did as Senator - including BCCI and Iran/Contra in the beginning to cosponsoring SCHIP to his work as Chair of SFRC including work in support of START.
Each of these bullet points represent more of a positive legacy than even most politicians/statesmen ever have.
By the way, the Aaron David Miller part was kind of funny - if you read his Newsday piece last week which essentially suggested Kerry should not go after a deal in Iran, which would irritate Netanyahu. http://www.newsday.com/opinion/oped/miller-is-john-kerry-in-over-his-head-1.6465063 If everything works out here, he may have had a lead role (with others) in avoiding a war that would have been catastrophic. In fact, even the elimination of chemical weapons - which were being regularly used in Syria, is a major legacy.